|  | #!/usr/bin/env python | 
|  |  | 
|  | # Copyright (C) 2014 The Android Open Source Project | 
|  | # | 
|  | # Licensed under the Apache License, Version 2.0 (the 'License'); | 
|  | # you may not use this file except in compliance with the License. | 
|  | # You may obtain a copy of the License at | 
|  | # | 
|  | #      http://www.apache.org/licenses/LICENSE-2.0 | 
|  | # | 
|  | # Unless required by applicable law or agreed to in writing, software | 
|  | # distributed under the License is distributed on an 'AS IS' BASIS, | 
|  | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 
|  | # See the License for the specific language governing permissions and | 
|  | # limitations under the License. | 
|  |  | 
|  | """ | 
|  | Enforces common Android public API design patterns.  It ignores lint messages from | 
|  | a previous API level, if provided. | 
|  |  | 
|  | Usage: apilint.py current.txt | 
|  | Usage: apilint.py current.txt previous.txt | 
|  |  | 
|  | You can also splice in blame details like this: | 
|  | $ git blame api/current.txt -t -e > /tmp/currentblame.txt | 
|  | $ apilint.py /tmp/currentblame.txt previous.txt --no-color | 
|  | """ | 
|  |  | 
|  | import re, sys, collections, traceback | 
|  |  | 
|  |  | 
|  | BLACK, RED, GREEN, YELLOW, BLUE, MAGENTA, CYAN, WHITE = range(8) | 
|  |  | 
|  | def format(fg=None, bg=None, bright=False, bold=False, dim=False, reset=False): | 
|  | # manually derived from http://en.wikipedia.org/wiki/ANSI_escape_code#Codes | 
|  | if "--no-color" in sys.argv: return "" | 
|  | codes = [] | 
|  | if reset: codes.append("0") | 
|  | else: | 
|  | if not fg is None: codes.append("3%d" % (fg)) | 
|  | if not bg is None: | 
|  | if not bright: codes.append("4%d" % (bg)) | 
|  | else: codes.append("10%d" % (bg)) | 
|  | if bold: codes.append("1") | 
|  | elif dim: codes.append("2") | 
|  | else: codes.append("22") | 
|  | return "\033[%sm" % (";".join(codes)) | 
|  |  | 
|  |  | 
|  | class Field(): | 
|  | def __init__(self, clazz, raw, blame): | 
|  | self.clazz = clazz | 
|  | self.raw = raw.strip(" {;") | 
|  | self.blame = blame | 
|  |  | 
|  | raw = raw.split() | 
|  | self.split = list(raw) | 
|  |  | 
|  | for r in ["field", "volatile", "transient", "public", "protected", "static", "final", "deprecated"]: | 
|  | while r in raw: raw.remove(r) | 
|  |  | 
|  | self.typ = raw[0] | 
|  | self.name = raw[1].strip(";") | 
|  | if len(raw) >= 4 and raw[2] == "=": | 
|  | self.value = raw[3].strip(';"') | 
|  | else: | 
|  | self.value = None | 
|  |  | 
|  | self.ident = self.raw.replace(" deprecated ", " ") | 
|  |  | 
|  | def __repr__(self): | 
|  | return self.raw | 
|  |  | 
|  |  | 
|  | class Method(): | 
|  | def __init__(self, clazz, raw, blame): | 
|  | self.clazz = clazz | 
|  | self.raw = raw.strip(" {;") | 
|  | self.blame = blame | 
|  |  | 
|  | # drop generics for now | 
|  | raw = re.sub("<.+?>", "", raw) | 
|  |  | 
|  | raw = re.split("[\s(),;]+", raw) | 
|  | for r in ["", ";"]: | 
|  | while r in raw: raw.remove(r) | 
|  | self.split = list(raw) | 
|  |  | 
|  | for r in ["method", "public", "protected", "static", "final", "deprecated", "abstract"]: | 
|  | while r in raw: raw.remove(r) | 
|  |  | 
|  | self.typ = raw[0] | 
|  | self.name = raw[1] | 
|  | self.args = [] | 
|  | for r in raw[2:]: | 
|  | if r == "throws": break | 
|  | self.args.append(r) | 
|  |  | 
|  | # identity for compat purposes | 
|  | ident = self.raw | 
|  | ident = ident.replace(" deprecated ", " ") | 
|  | ident = ident.replace(" synchronized ", " ") | 
|  | ident = re.sub("<.+?>", "", ident) | 
|  | if " throws " in ident: | 
|  | ident = ident[:ident.index(" throws ")] | 
|  | self.ident = ident | 
|  |  | 
|  | def __repr__(self): | 
|  | return self.raw | 
|  |  | 
|  |  | 
|  | class Class(): | 
|  | def __init__(self, pkg, raw, blame): | 
|  | self.pkg = pkg | 
|  | self.raw = raw.strip(" {;") | 
|  | self.blame = blame | 
|  | self.ctors = [] | 
|  | self.fields = [] | 
|  | self.methods = [] | 
|  |  | 
|  | raw = raw.split() | 
|  | self.split = list(raw) | 
|  | if "class" in raw: | 
|  | self.fullname = raw[raw.index("class")+1] | 
|  | elif "interface" in raw: | 
|  | self.fullname = raw[raw.index("interface")+1] | 
|  | else: | 
|  | raise ValueError("Funky class type %s" % (self.raw)) | 
|  |  | 
|  | if "extends" in raw: | 
|  | self.extends = raw[raw.index("extends")+1] | 
|  | else: | 
|  | self.extends = None | 
|  |  | 
|  | self.fullname = self.pkg.name + "." + self.fullname | 
|  | self.name = self.fullname[self.fullname.rindex(".")+1:] | 
|  |  | 
|  | def __repr__(self): | 
|  | return self.raw | 
|  |  | 
|  |  | 
|  | class Package(): | 
|  | def __init__(self, raw, blame): | 
|  | self.raw = raw.strip(" {;") | 
|  | self.blame = blame | 
|  |  | 
|  | raw = raw.split() | 
|  | self.name = raw[raw.index("package")+1] | 
|  |  | 
|  | def __repr__(self): | 
|  | return self.raw | 
|  |  | 
|  |  | 
|  | def parse_api(fn): | 
|  | api = {} | 
|  | pkg = None | 
|  | clazz = None | 
|  | blame = None | 
|  |  | 
|  | re_blame = re.compile("^([a-z0-9]{7,}) \(<([^>]+)>.+?\) (.+?)$") | 
|  |  | 
|  | with open(fn) as f: | 
|  | for raw in f.readlines(): | 
|  | raw = raw.rstrip() | 
|  | match = re_blame.match(raw) | 
|  | if match is not None: | 
|  | blame = match.groups()[0:2] | 
|  | raw = match.groups()[2] | 
|  | else: | 
|  | blame = None | 
|  |  | 
|  | if raw.startswith("package"): | 
|  | pkg = Package(raw, blame) | 
|  | elif raw.startswith("  ") and raw.endswith("{"): | 
|  | clazz = Class(pkg, raw, blame) | 
|  | api[clazz.fullname] = clazz | 
|  | elif raw.startswith("    ctor"): | 
|  | clazz.ctors.append(Method(clazz, raw, blame)) | 
|  | elif raw.startswith("    method"): | 
|  | clazz.methods.append(Method(clazz, raw, blame)) | 
|  | elif raw.startswith("    field"): | 
|  | clazz.fields.append(Field(clazz, raw, blame)) | 
|  |  | 
|  | return api | 
|  |  | 
|  |  | 
|  | failures = {} | 
|  |  | 
|  | def _fail(clazz, detail, msg): | 
|  | """Records an API failure to be processed later.""" | 
|  | global failures | 
|  |  | 
|  | sig = "%s-%s-%s" % (clazz.fullname, repr(detail), msg) | 
|  | sig = sig.replace(" deprecated ", " ") | 
|  |  | 
|  | res = msg | 
|  | blame = clazz.blame | 
|  | if detail is not None: | 
|  | res += "\n    in " + repr(detail) | 
|  | blame = detail.blame | 
|  | res += "\n    in " + repr(clazz) | 
|  | res += "\n    in " + repr(clazz.pkg) | 
|  | if blame is not None: | 
|  | res += "\n    last modified by %s in %s" % (blame[1], blame[0]) | 
|  | failures[sig] = res | 
|  |  | 
|  | def warn(clazz, detail, msg): | 
|  | _fail(clazz, detail, "%sWarning:%s %s" % (format(fg=YELLOW, bg=BLACK, bold=True), format(reset=True), msg)) | 
|  |  | 
|  | def error(clazz, detail, msg): | 
|  | _fail(clazz, detail, "%sError:%s %s" % (format(fg=RED, bg=BLACK, bold=True), format(reset=True), msg)) | 
|  |  | 
|  |  | 
|  | def verify_constants(clazz): | 
|  | """All static final constants must be FOO_NAME style.""" | 
|  | if re.match("android\.R\.[a-z]+", clazz.fullname): return | 
|  |  | 
|  | for f in clazz.fields: | 
|  | if "static" in f.split and "final" in f.split: | 
|  | if re.match("[A-Z0-9_]+", f.name) is None: | 
|  | error(clazz, f, "Constant field names should be FOO_NAME") | 
|  |  | 
|  |  | 
|  | def verify_enums(clazz): | 
|  | """Enums are bad, mmkay?""" | 
|  | if "extends java.lang.Enum" in clazz.raw: | 
|  | error(clazz, None, "Enums are not allowed") | 
|  |  | 
|  |  | 
|  | def verify_class_names(clazz): | 
|  | """Try catching malformed class names like myMtp or MTPUser.""" | 
|  | if clazz.fullname.startswith("android.opengl"): return | 
|  | if clazz.fullname.startswith("android.renderscript"): return | 
|  | if re.match("android\.R\.[a-z]+", clazz.fullname): return | 
|  |  | 
|  | if re.search("[A-Z]{2,}", clazz.name) is not None: | 
|  | warn(clazz, None, "Class name style should be Mtp not MTP") | 
|  | if re.match("[^A-Z]", clazz.name): | 
|  | error(clazz, None, "Class must start with uppercase char") | 
|  |  | 
|  |  | 
|  | def verify_method_names(clazz): | 
|  | """Try catching malformed method names, like Foo() or getMTU().""" | 
|  | if clazz.fullname.startswith("android.opengl"): return | 
|  | if clazz.fullname.startswith("android.renderscript"): return | 
|  | if clazz.fullname == "android.system.OsConstants": return | 
|  |  | 
|  | for m in clazz.methods: | 
|  | if re.search("[A-Z]{2,}", m.name) is not None: | 
|  | warn(clazz, m, "Method name style should be getMtu() instead of getMTU()") | 
|  | if re.match("[^a-z]", m.name): | 
|  | error(clazz, m, "Method name must start with lowercase char") | 
|  |  | 
|  |  | 
|  | def verify_callbacks(clazz): | 
|  | """Verify Callback classes. | 
|  | All callback classes must be abstract. | 
|  | All methods must follow onFoo() naming style.""" | 
|  | if clazz.fullname == "android.speech.tts.SynthesisCallback": return | 
|  |  | 
|  | if clazz.name.endswith("Callbacks"): | 
|  | error(clazz, None, "Class name must not be plural") | 
|  | if clazz.name.endswith("Observer"): | 
|  | warn(clazz, None, "Class should be named FooCallback") | 
|  |  | 
|  | if clazz.name.endswith("Callback"): | 
|  | if "interface" in clazz.split: | 
|  | error(clazz, None, "Callback must be abstract class to enable extension in future API levels") | 
|  |  | 
|  | for m in clazz.methods: | 
|  | if not re.match("on[A-Z][a-z]*", m.name): | 
|  | error(clazz, m, "Callback method names must be onFoo() style") | 
|  |  | 
|  |  | 
|  | def verify_listeners(clazz): | 
|  | """Verify Listener classes. | 
|  | All Listener classes must be interface. | 
|  | All methods must follow onFoo() naming style. | 
|  | If only a single method, it must match class name: | 
|  | interface OnFooListener { void onFoo() }""" | 
|  |  | 
|  | if clazz.name.endswith("Listener"): | 
|  | if " abstract class " in clazz.raw: | 
|  | error(clazz, None, "Listener should be an interface, otherwise renamed Callback") | 
|  |  | 
|  | for m in clazz.methods: | 
|  | if not re.match("on[A-Z][a-z]*", m.name): | 
|  | error(clazz, m, "Listener method names must be onFoo() style") | 
|  |  | 
|  | if len(clazz.methods) == 1 and clazz.name.startswith("On"): | 
|  | m = clazz.methods[0] | 
|  | if (m.name + "Listener").lower() != clazz.name.lower(): | 
|  | error(clazz, m, "Single listener method name should match class name") | 
|  |  | 
|  |  | 
|  | def verify_actions(clazz): | 
|  | """Verify intent actions. | 
|  | All action names must be named ACTION_FOO. | 
|  | All action values must be scoped by package and match name: | 
|  | package android.foo { | 
|  | String ACTION_BAR = "android.foo.action.BAR"; | 
|  | }""" | 
|  | for f in clazz.fields: | 
|  | if f.value is None: continue | 
|  | if f.name.startswith("EXTRA_"): continue | 
|  | if f.name == "SERVICE_INTERFACE" or f.name == "PROVIDER_INTERFACE": continue | 
|  |  | 
|  | if "static" in f.split and "final" in f.split and f.typ == "java.lang.String": | 
|  | if "_ACTION" in f.name or "ACTION_" in f.name or ".action." in f.value.lower(): | 
|  | if not f.name.startswith("ACTION_"): | 
|  | error(clazz, f, "Intent action constant name must be ACTION_FOO") | 
|  | else: | 
|  | if clazz.fullname == "android.content.Intent": | 
|  | prefix = "android.intent.action" | 
|  | elif clazz.fullname == "android.provider.Settings": | 
|  | prefix = "android.settings" | 
|  | elif clazz.fullname == "android.app.admin.DevicePolicyManager" or clazz.fullname == "android.app.admin.DeviceAdminReceiver": | 
|  | prefix = "android.app.action" | 
|  | else: | 
|  | prefix = clazz.pkg.name + ".action" | 
|  | expected = prefix + "." + f.name[7:] | 
|  | if f.value != expected: | 
|  | error(clazz, f, "Inconsistent action value; expected %s" % (expected)) | 
|  |  | 
|  |  | 
|  | def verify_extras(clazz): | 
|  | """Verify intent extras. | 
|  | All extra names must be named EXTRA_FOO. | 
|  | All extra values must be scoped by package and match name: | 
|  | package android.foo { | 
|  | String EXTRA_BAR = "android.foo.extra.BAR"; | 
|  | }""" | 
|  | if clazz.fullname == "android.app.Notification": return | 
|  | if clazz.fullname == "android.appwidget.AppWidgetManager": return | 
|  |  | 
|  | for f in clazz.fields: | 
|  | if f.value is None: continue | 
|  | if f.name.startswith("ACTION_"): continue | 
|  |  | 
|  | if "static" in f.split and "final" in f.split and f.typ == "java.lang.String": | 
|  | if "_EXTRA" in f.name or "EXTRA_" in f.name or ".extra" in f.value.lower(): | 
|  | if not f.name.startswith("EXTRA_"): | 
|  | error(clazz, f, "Intent extra must be EXTRA_FOO") | 
|  | else: | 
|  | if clazz.pkg.name == "android.content" and clazz.name == "Intent": | 
|  | prefix = "android.intent.extra" | 
|  | elif clazz.pkg.name == "android.app.admin": | 
|  | prefix = "android.app.extra" | 
|  | else: | 
|  | prefix = clazz.pkg.name + ".extra" | 
|  | expected = prefix + "." + f.name[6:] | 
|  | if f.value != expected: | 
|  | error(clazz, f, "Inconsistent extra value; expected %s" % (expected)) | 
|  |  | 
|  |  | 
|  | def verify_equals(clazz): | 
|  | """Verify that equals() and hashCode() must be overridden together.""" | 
|  | methods = [ m.name for m in clazz.methods ] | 
|  | eq = "equals" in methods | 
|  | hc = "hashCode" in methods | 
|  | if eq != hc: | 
|  | error(clazz, None, "Must override both equals and hashCode; missing one") | 
|  |  | 
|  |  | 
|  | def verify_parcelable(clazz): | 
|  | """Verify that Parcelable objects aren't hiding required bits.""" | 
|  | if "implements android.os.Parcelable" in clazz.raw: | 
|  | creator = [ i for i in clazz.fields if i.name == "CREATOR" ] | 
|  | write = [ i for i in clazz.methods if i.name == "writeToParcel" ] | 
|  | describe = [ i for i in clazz.methods if i.name == "describeContents" ] | 
|  |  | 
|  | if len(creator) == 0 or len(write) == 0 or len(describe) == 0: | 
|  | error(clazz, None, "Parcelable requires CREATOR, writeToParcel, and describeContents; missing one") | 
|  |  | 
|  |  | 
|  | def verify_protected(clazz): | 
|  | """Verify that no protected methods are allowed.""" | 
|  | for m in clazz.methods: | 
|  | if "protected" in m.split: | 
|  | error(clazz, m, "No protected methods; must be public") | 
|  | for f in clazz.fields: | 
|  | if "protected" in f.split: | 
|  | error(clazz, f, "No protected fields; must be public") | 
|  |  | 
|  |  | 
|  | def verify_fields(clazz): | 
|  | """Verify that all exposed fields are final. | 
|  | Exposed fields must follow myName style. | 
|  | Catch internal mFoo objects being exposed.""" | 
|  |  | 
|  | IGNORE_BARE_FIELDS = [ | 
|  | "android.app.ActivityManager.RecentTaskInfo", | 
|  | "android.app.Notification", | 
|  | "android.content.pm.ActivityInfo", | 
|  | "android.content.pm.ApplicationInfo", | 
|  | "android.content.pm.FeatureGroupInfo", | 
|  | "android.content.pm.InstrumentationInfo", | 
|  | "android.content.pm.PackageInfo", | 
|  | "android.content.pm.PackageItemInfo", | 
|  | "android.os.Message", | 
|  | "android.system.StructPollfd", | 
|  | ] | 
|  |  | 
|  | for f in clazz.fields: | 
|  | if not "final" in f.split: | 
|  | if clazz.fullname in IGNORE_BARE_FIELDS: | 
|  | pass | 
|  | elif clazz.fullname.endswith("LayoutParams"): | 
|  | pass | 
|  | elif clazz.fullname.startswith("android.util.Mutable"): | 
|  | pass | 
|  | else: | 
|  | error(clazz, f, "Bare fields must be marked final; consider adding accessors") | 
|  |  | 
|  | if not "static" in f.split: | 
|  | if not re.match("[a-z]([a-zA-Z]+)?", f.name): | 
|  | error(clazz, f, "Non-static fields must be named with myField style") | 
|  |  | 
|  | if re.match("[ms][A-Z]", f.name): | 
|  | error(clazz, f, "Don't expose your internal objects") | 
|  |  | 
|  | if re.match("[A-Z_]+", f.name): | 
|  | if "static" not in f.split or "final" not in f.split: | 
|  | error(clazz, f, "Constants must be marked static final") | 
|  |  | 
|  |  | 
|  | def verify_register(clazz): | 
|  | """Verify parity of registration methods. | 
|  | Callback objects use register/unregister methods. | 
|  | Listener objects use add/remove methods.""" | 
|  | methods = [ m.name for m in clazz.methods ] | 
|  | for m in clazz.methods: | 
|  | if "Callback" in m.raw: | 
|  | if m.name.startswith("register"): | 
|  | other = "unregister" + m.name[8:] | 
|  | if other not in methods: | 
|  | error(clazz, m, "Missing unregister method") | 
|  | if m.name.startswith("unregister"): | 
|  | other = "register" + m.name[10:] | 
|  | if other not in methods: | 
|  | error(clazz, m, "Missing register method") | 
|  |  | 
|  | if m.name.startswith("add") or m.name.startswith("remove"): | 
|  | error(clazz, m, "Callback methods should be named register/unregister") | 
|  |  | 
|  | if "Listener" in m.raw: | 
|  | if m.name.startswith("add"): | 
|  | other = "remove" + m.name[3:] | 
|  | if other not in methods: | 
|  | error(clazz, m, "Missing remove method") | 
|  | if m.name.startswith("remove") and not m.name.startswith("removeAll"): | 
|  | other = "add" + m.name[6:] | 
|  | if other not in methods: | 
|  | error(clazz, m, "Missing add method") | 
|  |  | 
|  | if m.name.startswith("register") or m.name.startswith("unregister"): | 
|  | error(clazz, m, "Listener methods should be named add/remove") | 
|  |  | 
|  |  | 
|  | def verify_sync(clazz): | 
|  | """Verify synchronized methods aren't exposed.""" | 
|  | for m in clazz.methods: | 
|  | if "synchronized" in m.split: | 
|  | error(clazz, m, "Internal lock exposed") | 
|  |  | 
|  |  | 
|  | def verify_intent_builder(clazz): | 
|  | """Verify that Intent builders are createFooIntent() style.""" | 
|  | if clazz.name == "Intent": return | 
|  |  | 
|  | for m in clazz.methods: | 
|  | if m.typ == "android.content.Intent": | 
|  | if m.name.startswith("create") and m.name.endswith("Intent"): | 
|  | pass | 
|  | else: | 
|  | error(clazz, m, "Methods creating an Intent should be named createFooIntent()") | 
|  |  | 
|  |  | 
|  | def verify_helper_classes(clazz): | 
|  | """Verify that helper classes are named consistently with what they extend. | 
|  | All developer extendable methods should be named onFoo().""" | 
|  | test_methods = False | 
|  | if "extends android.app.Service" in clazz.raw: | 
|  | test_methods = True | 
|  | if not clazz.name.endswith("Service"): | 
|  | error(clazz, None, "Inconsistent class name; should be FooService") | 
|  |  | 
|  | found = False | 
|  | for f in clazz.fields: | 
|  | if f.name == "SERVICE_INTERFACE": | 
|  | found = True | 
|  | if f.value != clazz.fullname: | 
|  | error(clazz, f, "Inconsistent interface constant; expected %s" % (clazz.fullname)) | 
|  |  | 
|  | if not found: | 
|  | warn(clazz, None, "Missing SERVICE_INTERFACE constant") | 
|  |  | 
|  | if "abstract" in clazz.split and not clazz.fullname.startswith("android.service."): | 
|  | warn(clazz, None, "Services extended by developers should be under android.service") | 
|  |  | 
|  | if "extends android.content.ContentProvider" in clazz.raw: | 
|  | test_methods = True | 
|  | if not clazz.name.endswith("Provider"): | 
|  | error(clazz, None, "Inconsistent class name; should be FooProvider") | 
|  |  | 
|  | found = False | 
|  | for f in clazz.fields: | 
|  | if f.name == "PROVIDER_INTERFACE": | 
|  | found = True | 
|  | if f.value != clazz.fullname: | 
|  | error(clazz, f, "Inconsistent interface name; expected %s" % (clazz.fullname)) | 
|  |  | 
|  | if not found: | 
|  | warn(clazz, None, "Missing PROVIDER_INTERFACE constant") | 
|  |  | 
|  | if "abstract" in clazz.split and not clazz.fullname.startswith("android.provider."): | 
|  | warn(clazz, None, "Providers extended by developers should be under android.provider") | 
|  |  | 
|  | if "extends android.content.BroadcastReceiver" in clazz.raw: | 
|  | test_methods = True | 
|  | if not clazz.name.endswith("Receiver"): | 
|  | error(clazz, None, "Inconsistent class name; should be FooReceiver") | 
|  |  | 
|  | if "extends android.app.Activity" in clazz.raw: | 
|  | test_methods = True | 
|  | if not clazz.name.endswith("Activity"): | 
|  | error(clazz, None, "Inconsistent class name; should be FooActivity") | 
|  |  | 
|  | if test_methods: | 
|  | for m in clazz.methods: | 
|  | if "final" in m.split: continue | 
|  | if not re.match("on[A-Z]", m.name): | 
|  | if "abstract" in m.split: | 
|  | error(clazz, m, "Methods implemented by developers must be named onFoo()") | 
|  | else: | 
|  | warn(clazz, m, "If implemented by developer, should be named onFoo(); otherwise consider marking final") | 
|  |  | 
|  |  | 
|  | def verify_builder(clazz): | 
|  | """Verify builder classes. | 
|  | Methods should return the builder to enable chaining.""" | 
|  | if " extends " in clazz.raw: return | 
|  | if not clazz.name.endswith("Builder"): return | 
|  |  | 
|  | if clazz.name != "Builder": | 
|  | warn(clazz, None, "Builder should be defined as inner class") | 
|  |  | 
|  | has_build = False | 
|  | for m in clazz.methods: | 
|  | if m.name == "build": | 
|  | has_build = True | 
|  | continue | 
|  |  | 
|  | if m.name.startswith("get"): continue | 
|  | if m.name.startswith("clear"): continue | 
|  |  | 
|  | if m.name.startswith("with"): | 
|  | error(clazz, m, "Builder methods names must follow setFoo() style") | 
|  |  | 
|  | if m.name.startswith("set"): | 
|  | if not m.typ.endswith(clazz.fullname): | 
|  | warn(clazz, m, "Methods should return the builder") | 
|  |  | 
|  | if not has_build: | 
|  | warn(clazz, None, "Missing build() method") | 
|  |  | 
|  |  | 
|  | def verify_aidl(clazz): | 
|  | """Catch people exposing raw AIDL.""" | 
|  | if "extends android.os.Binder" in clazz.raw or "implements android.os.IInterface" in clazz.raw: | 
|  | error(clazz, None, "Exposing raw AIDL interface") | 
|  |  | 
|  |  | 
|  | def verify_internal(clazz): | 
|  | """Catch people exposing internal classes.""" | 
|  | if clazz.pkg.name.startswith("com.android"): | 
|  | error(clazz, None, "Exposing internal class") | 
|  |  | 
|  |  | 
|  | def verify_layering(clazz): | 
|  | """Catch package layering violations. | 
|  | For example, something in android.os depending on android.app.""" | 
|  | ranking = [ | 
|  | ["android.service","android.accessibilityservice","android.inputmethodservice","android.printservice","android.appwidget","android.webkit","android.preference","android.gesture","android.print"], | 
|  | "android.app", | 
|  | "android.widget", | 
|  | "android.view", | 
|  | "android.animation", | 
|  | "android.provider", | 
|  | ["android.content","android.graphics.drawable"], | 
|  | "android.database", | 
|  | "android.graphics", | 
|  | "android.text", | 
|  | "android.os", | 
|  | "android.util" | 
|  | ] | 
|  |  | 
|  | def rank(p): | 
|  | for i in range(len(ranking)): | 
|  | if isinstance(ranking[i], list): | 
|  | for j in ranking[i]: | 
|  | if p.startswith(j): return i | 
|  | else: | 
|  | if p.startswith(ranking[i]): return i | 
|  |  | 
|  | cr = rank(clazz.pkg.name) | 
|  | if cr is None: return | 
|  |  | 
|  | for f in clazz.fields: | 
|  | ir = rank(f.typ) | 
|  | if ir and ir < cr: | 
|  | warn(clazz, f, "Field type violates package layering") | 
|  |  | 
|  | for m in clazz.methods: | 
|  | ir = rank(m.typ) | 
|  | if ir and ir < cr: | 
|  | warn(clazz, m, "Method return type violates package layering") | 
|  | for arg in m.args: | 
|  | ir = rank(arg) | 
|  | if ir and ir < cr: | 
|  | warn(clazz, m, "Method argument type violates package layering") | 
|  |  | 
|  |  | 
|  | def verify_boolean(clazz, api): | 
|  | """Catches people returning boolean from getFoo() style methods. | 
|  | Ignores when matching setFoo() is present.""" | 
|  |  | 
|  | methods = [ m.name for m in clazz.methods ] | 
|  |  | 
|  | builder = clazz.fullname + ".Builder" | 
|  | builder_methods = [] | 
|  | if builder in api: | 
|  | builder_methods = [ m.name for m in api[builder].methods ] | 
|  |  | 
|  | for m in clazz.methods: | 
|  | if m.typ == "boolean" and m.name.startswith("get") and m.name != "get" and len(m.args) == 0: | 
|  | setter = "set" + m.name[3:] | 
|  | if setter in methods: | 
|  | pass | 
|  | elif builder is not None and setter in builder_methods: | 
|  | pass | 
|  | else: | 
|  | warn(clazz, m, "Methods returning boolean should be named isFoo, hasFoo, areFoo") | 
|  |  | 
|  |  | 
|  | def verify_collections(clazz): | 
|  | """Verifies that collection types are interfaces.""" | 
|  | if clazz.fullname == "android.os.Bundle": return | 
|  |  | 
|  | bad = ["java.util.Vector", "java.util.LinkedList", "java.util.ArrayList", "java.util.Stack", | 
|  | "java.util.HashMap", "java.util.HashSet", "android.util.ArraySet", "android.util.ArrayMap"] | 
|  | for m in clazz.methods: | 
|  | if m.typ in bad: | 
|  | error(clazz, m, "Return type is concrete collection; should be interface") | 
|  | for arg in m.args: | 
|  | if arg in bad: | 
|  | error(clazz, m, "Argument is concrete collection; should be interface") | 
|  |  | 
|  |  | 
|  | def verify_flags(clazz): | 
|  | """Verifies that flags are non-overlapping.""" | 
|  | known = collections.defaultdict(int) | 
|  | for f in clazz.fields: | 
|  | if "FLAG_" in f.name: | 
|  | try: | 
|  | val = int(f.value) | 
|  | except: | 
|  | continue | 
|  |  | 
|  | scope = f.name[0:f.name.index("FLAG_")] | 
|  | if val & known[scope]: | 
|  | warn(clazz, f, "Found overlapping flag constant value") | 
|  | known[scope] |= val | 
|  |  | 
|  |  | 
|  | def verify_style(api): | 
|  | """Find all style issues in the given API level.""" | 
|  | global failures | 
|  |  | 
|  | failures = {} | 
|  | for key in sorted(api.keys()): | 
|  | clazz = api[key] | 
|  |  | 
|  | if clazz.pkg.name.startswith("java"): continue | 
|  | if clazz.pkg.name.startswith("junit"): continue | 
|  | if clazz.pkg.name.startswith("org.apache"): continue | 
|  | if clazz.pkg.name.startswith("org.xml"): continue | 
|  | if clazz.pkg.name.startswith("org.json"): continue | 
|  | if clazz.pkg.name.startswith("org.w3c"): continue | 
|  |  | 
|  | verify_constants(clazz) | 
|  | verify_enums(clazz) | 
|  | verify_class_names(clazz) | 
|  | verify_method_names(clazz) | 
|  | verify_callbacks(clazz) | 
|  | verify_listeners(clazz) | 
|  | verify_actions(clazz) | 
|  | verify_extras(clazz) | 
|  | verify_equals(clazz) | 
|  | verify_parcelable(clazz) | 
|  | verify_protected(clazz) | 
|  | verify_fields(clazz) | 
|  | verify_register(clazz) | 
|  | verify_sync(clazz) | 
|  | verify_intent_builder(clazz) | 
|  | verify_helper_classes(clazz) | 
|  | verify_builder(clazz) | 
|  | verify_aidl(clazz) | 
|  | verify_internal(clazz) | 
|  | verify_layering(clazz) | 
|  | verify_boolean(clazz, api) | 
|  | verify_collections(clazz) | 
|  | verify_flags(clazz) | 
|  |  | 
|  | return failures | 
|  |  | 
|  |  | 
|  | def verify_compat(cur, prev): | 
|  | """Find any incompatible API changes between two levels.""" | 
|  | global failures | 
|  |  | 
|  | def class_exists(api, test): | 
|  | return test.fullname in api | 
|  |  | 
|  | def ctor_exists(api, clazz, test): | 
|  | for m in clazz.ctors: | 
|  | if m.ident == test.ident: return True | 
|  | return False | 
|  |  | 
|  | def all_methods(api, clazz): | 
|  | methods = list(clazz.methods) | 
|  | if clazz.extends is not None: | 
|  | methods.extend(all_methods(api, api[clazz.extends])) | 
|  | return methods | 
|  |  | 
|  | def method_exists(api, clazz, test): | 
|  | methods = all_methods(api, clazz) | 
|  | for m in methods: | 
|  | if m.ident == test.ident: return True | 
|  | return False | 
|  |  | 
|  | def field_exists(api, clazz, test): | 
|  | for f in clazz.fields: | 
|  | if f.ident == test.ident: return True | 
|  | return False | 
|  |  | 
|  | failures = {} | 
|  | for key in sorted(prev.keys()): | 
|  | prev_clazz = prev[key] | 
|  |  | 
|  | if not class_exists(cur, prev_clazz): | 
|  | error(prev_clazz, None, "Class removed or incompatible change") | 
|  | continue | 
|  |  | 
|  | cur_clazz = cur[key] | 
|  |  | 
|  | for test in prev_clazz.ctors: | 
|  | if not ctor_exists(cur, cur_clazz, test): | 
|  | error(prev_clazz, prev_ctor, "Constructor removed or incompatible change") | 
|  |  | 
|  | methods = all_methods(prev, prev_clazz) | 
|  | for test in methods: | 
|  | if not method_exists(cur, cur_clazz, test): | 
|  | error(prev_clazz, test, "Method removed or incompatible change") | 
|  |  | 
|  | for test in prev_clazz.fields: | 
|  | if not field_exists(cur, cur_clazz, test): | 
|  | error(prev_clazz, test, "Field removed or incompatible change") | 
|  |  | 
|  | return failures | 
|  |  | 
|  |  | 
|  | cur = parse_api(sys.argv[1]) | 
|  | cur_fail = verify_style(cur) | 
|  |  | 
|  | if len(sys.argv) > 2: | 
|  | prev = parse_api(sys.argv[2]) | 
|  | prev_fail = verify_style(prev) | 
|  |  | 
|  | # ignore errors from previous API level | 
|  | for p in prev_fail: | 
|  | if p in cur_fail: | 
|  | del cur_fail[p] | 
|  |  | 
|  | # look for compatibility issues | 
|  | compat_fail = verify_compat(cur, prev) | 
|  |  | 
|  | print "%s API compatibility issues %s\n" % ((format(fg=WHITE, bg=BLUE, bold=True), format(reset=True))) | 
|  | for f in sorted(compat_fail): | 
|  | print compat_fail[f] | 
|  | print | 
|  |  | 
|  |  | 
|  | print "%s API style issues %s\n" % ((format(fg=WHITE, bg=BLUE, bold=True), format(reset=True))) | 
|  | for f in sorted(cur_fail): | 
|  | print cur_fail[f] | 
|  | print |